Scaffolding



' w. A. PARKER SCAFFOLDING .Filed April 23, 1946 Feb. 3, 194s.

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Wij/Liann Alfred Parker Per @M420- @BMX/M Feb. 3, 1948. A w. A. PARKER 2,435,451

SCAFFOLDING I Filed April .23,4 1946 @sheets-sheep z l Invewtor. William Mfr-ed Parket Patented Feb. 3, 1948 SCAFFOLDING William Alfred Parker, Marton, Blackpool,

Enlland Application April 23, 1946, Serial No. 664,215

In Great Britain Mayl, 1945 Y 4 claim. (on. :o4-) Y This invention relates to scaffolding and has for its object to provide a novel construction which enables scaffolding to be built expeditiously I and without the aid of securing screws, nuts or clamps.

A scaffolding in accordance with my invention comprises uprights of flat sided cross-section and having apertures distributed along its length adapted to have brackets hooked into them'for engagement by and to support connecting members and also having apertures adapted to be engaged by spring-fixed stop means which act to prevent disengagement of the connecting members from the brackets. 'f

Adjacent uprights are disposed with opposed corners and two slots and brackets are provided for engagement of each end of the connecting member, which end is formed with a V-notch to accommodate two sides of the upright and with slots to engage the brackets, so that lateral, downward and longitudinal displacement of the connecting member is prevented.

The spring-fixed stop means may consist of a springy clip of staple-like form adapted to be forced into apertures provided in the upright and to thereby form a stop which positively prevents material upward displacement of the connecting member.

For corner uprights,l the cross-section thereof may be oblong. y

For intermediate uprights, the cross-section thereof may be square.

The uprights and connecting members are preferably tubular.

-I attain this object by the means illustrated in the accompanying drawings, wherein- Figure 1 is a fragmentary end view, partly in section of a portion of a scaffolding.

Figure 2 isa fragmentary plan view thereof.

. Figure 3 is a view in section taken on line 3--3 of Figure 2.

Figure 4 is a side elevation of a detail.

-Figure 5 is a plan view of Figure 4.

Figure 6 is a fragmentary end view, partly in section of a portion of a scaffolding and illustrates another construction.

Figure 'I is a fragmentary plan view thereof.

Referring tothe drawings, in the construction shown in Figure 1, I provide uprights I of square tubular cross-section having on all four sides vertical slots 2 spaced suitable distances apart along the upright I and arranged in pairs of slots at equal heights, the one slot 2 of each pair being in one side of the upright I and the other slot 2 og the said pair being in an adjacent side 0fA the 2 upright I. The slots 2 are adapted for engagefv ment by vertical brackets 3, each comprising a part I which is substantially triangular in side view and'substantially rectangular in plan View and is outside the upright I, and an integral partV 5 which has at the top anupwardly projecting lug i and at the bottom leaves the rear side of the said part exposed to form a shoulder 1, the' bracket 3 being adapted to be hooked into jthe slot 2 with a substantially arcuate motion so that the lug 6 lies and bears against the insideof the upright above the slot 2, the bottom of the integral part 5 rests on the bottom edge of the Vslot and the shoulder 'I bears against the outside o f the upright I below the slot 2. This form of bracket enables it to be connected in situ by a simple hooking operation at the most opportune time and without the aid of screws, rivets or the like. When placed in position, the bracket 3, due

20 to its construction attaches itself securely to the cross-sectional size and shape as the uprights Iv are provided to connect one upright I to the next and form horizontal supports for platforms, or foot planks 9 and so forth. Each connecting member 8 has concave V-shaped ends to engage two adjacent sides of the two uprights I it connects together. member 8 there are two slots in two adjacent sides for engagement with the brackets 3.

The twouprights I to b e, connected together are arranged each with one corner opposed to the other. Brackets 3 are inserted in one pair of Slots 2 at a suitable elevationand brackets 3 are inserted in a pair of slots 2 of the other uprights at a corresponding elevation. project at right .angles from the sides on which they are situated and are therefore at right angles to each other. The ends of the connecting member i are engaged with the uprighlts and dropped on to the brackets 3 so that they are supported thereby with their slots engaged by the brackets 3. The engagementof the V-ends of the connect'- ing member 8 prevents lateral movement of the said member and thev engagement ofthe brackets member 8 and anything supported thereby, such ,i

as planks s.k

At each end of the connecting- The brackets 3v to a staple but of 'springy material are provided and the bent ends I2 of oneoi the$e ,ar e.

.- forced into the pair of holes I immediately abovejf the upper sides of the connecting member `8 at" each end thereof. ,A By their spring action thelo, locking members v II are yieldingly held against""' accidental separation from the uprights I. They'f form abutments which by acting on the upper part of the connecting mem-ber positively prevent such upward movement of the connecting mem-V :I5: ber 8 as would result in disengagement otzthe slots in the connecting member 8 and the brackets 3 until the ends I2'of the locking members tl are intentionally forced .out of the holes IIVi'nVA a non-vertical direction against the spring action of the locking members'.

Where an upright is to serve as a 'corner up right of ascaiolding it may be a's hereihbefore described', or it-.may be made''oblongl sol that.one of its wide sides accommodate half ot theQV- ends of'two connecting; members situated atright' angles to each other and its two narrow.' sides each accommodate'one of the remaining halves ofthe said ends. As shown, in Figures v1 and`2 square uprights as hereinl'ief'oreV described; may be .30"

used where a double scaffolding'with two rows lof uprights is required and Vthe uprightsr require. to

beconnected. by connectingvmembers which do not need to be all atA the samt-.elevation and some of which. connect together the individual .meinbers of each row together, whilst others connect members of the one row to members-of the other.

row.

Where a d'ouble`scaffo1ding`withtwo. rows of uprights is required and the uprights require 0" to be connected together by members .which con nect the one row to the other and by members at. the same elevation. whichconnect the1 indi.v vidual members of each. row together, rI may provide, as= shown in Figures V6 and '6. Square 11D.- rights. I3 of double cross-.sectional sizev and having in all. four sides: a series of slots and holes situated at the same elevatiorn .sov that the connecting members can be connected by brackets engaged 50."

in the slots and locked by locking. members en gaged in. the holes, toextend at 'the samey elevation from one, two, three.- or four sidesof each.V4 upright. In Figures 6 'and' 7, connecting mem,-

bers extending from three sides of each` upright 155;-

are shown. The form of slots, brackets, holes.' and locking members is identical. withr that deescribed with reference to Figures 1 'to 4.

Iclaim:

l. A scaffolding comprising in combinationf uprights. of square tubular' cross-section having in all their sides apertures Adistributed along their@ lengths, the uprightsbeing.' disposed with.. two.' adjacent sides of .onel uprightv opposite twoI ao`l-1 jacent sides of another upright', separategbrackets-I hooked into horizontally.'registering apertures; in' the said sides and projecting therefrom', separate: connecting members of square tubular'v cross' section and having slots engaging the 'Sad'A saidrbrackets, and separate spring'clips "enga'g-"f ing others o f the said apertures and? disposed above the said connecting members and form-F" ing above the said connecting" members obstrucf i, tions which prevent accidental lifting of the con-- '75"' brackets and uprightsg f members Iobliwq'u ltcitl'ie aXes'o the-said member-SE1 brackets from above and loosely-supportedby the 4 necting mem-bers out of engagement with the brackets.

2. A scaiolding comprising in combination, uprights of square tubular cross-section having slots and disposed with a corner of one upright pointing towards a corner of another upright, separate connecting members, Qf Square'tubular Crosssiection which is of the 7same` size las that of the uprights, each" connecting member having V- notched ends for engaging and accommodating 'two sides of an upright and also having oblique Afs l; ,t s',,two separate brackets hooked loosely into two adjacent slots in each of two adjacent upigl'its' and: projecting therefrom at an angle to `each other and engaging the oblique slots in each end; gffeaehgeonnecting member and thereby con- 'ectingthe-,said ends to the adjacent uprights and supporting the connecting' member, the connecting -member being held against lateral movement by engagement ofthe notched ends with the-4 uprights andfagainst laxial movementfby the obliqueness-'of theV slots andthe angular positionV oft'h'e brackets, and'separateV springl clips con-fv n'ectedto the uprights-'byV detachableV engagement with the apertures therein and forming on the uprights 'obstructions 'above' the connecting membersA forpreventin-g acci-dental. lifting of the con meeting members-V out of engagement. with the' 3. A scaffolding comprising', in combination, square tubular uprights having'k apertures and disf posed withl their flat sides oblique tothe side oi'.- v the scaiolding, 'separateshookonbrackets: provided on two adjacent sideslofeach uprightat al 353 rightangle yto eachaother'and each comprising a substantially triangular V`part outside the` up'- ri'gh't andV an integral partv which extends. throi-ighl the aperture inthe upright and isof nearly theA- saine' length as` the'a'perture and has at the-topl an upwardly projecting lugz situated. inside" thev upright and extending' 'upwardly beyond the upr-VV per end vof the said aperture, dropfonf'connecting" members-having oblique sl'ots engaging by downward engagement the brackets whichprojectfrom' 4%? the said two sides of the u-prights, the connecting members being held bythe brackets agaihstaxiai" and' downward movement and' by the upright'san'df' brackets against lateral movement, and staplelike spring cli-ps detachably engaging some-of the said apertures for forming obstructions above the connecting members for positively preventing'lift-- ing of the connecting members away' from Ythe' brackets.

@A4 scaffolding comprisingv'jin'combination squal'rey tubular` uprightshaving'slotsfin every side and cylindricalV holes in the" said iside'sf abovegand associated with the 'said'sflots; andlbeing arranged with the corners of som-e of: th-uprightspointing tqward'sfthe corners? ofrothers of v'the saidl uprights,4v separate vsquare Y'tubular cross -connecting members extending from` one upright to anotherl and arranged'witn 'the corners of 'some or tiie Said members' 'Deifingttdwardsrh corners ef others' oi thefsaidmeinbers,V-cuts as tthe ends ofthe said cross-connectingmeinbers; engaging,ll adjacent sides oftheV yuprights forpreventine: relative lateral- 'movemerit f the; said members andf'f-upri'ghts; slots Vvin Vthe 4said cross'--cQnnectingA 5 in the said members and arranged in pairs for supporting each of the ends of the vertical members and preventing the said members being pulled in longitudinal direction away from the uprights, and separate staple-like spring clips each sprung on to one of the uprights and engaging two of the cylindrical holes in diierent sides of the said upright and lying in an oblique position on the two uppermost sides of each of the said members for obstructing upward movement of the said members, the clips being detachable from the said uprights by being sprung on them.

WIILIAM ALFRED PARKER" REFERENCES CITED The following references are of record in the file of this patent: 

